/*
 * Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.
 * You can use this software according to the terms and conditions of the Mulan PSL v2.
 * You may obtain a copy of Mulan PSL v2 at:
 *          http://license.coscl.org.cn/MulanPSL2
 * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
 * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
 * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
 * See the Mulan PSL v2 for more details.
 */

#ifndef OMNISTREAM_STATEBACKEND
#define OMNISTREAM_STATEBACKEND

#include "AbstractKeyedStateBackend.h"
#include "runtime/state/heap/HeapKeyedStateBackendBuilder.h"
#include "runtime/execution/OmniEnvironment.h"

class StateBackend {
public:
    virtual ~StateBackend() = default;

    template <typename K>
    AbstractKeyedStateBackend<K> *createKeyedStateBackend(
        omnistream::EnvironmentV2 *env,
        std::set<KeyedStateHandle> stateHandles,
        KeyGroupRange *keyGroupRange,
        TypeSerializer *keySerializer,
        int numberOfKeyGroups);

    template <typename K>
    AbstractKeyedStateBackend<K> *createKeyedStateBackend(
            omnistream::EnvironmentV2 *env,
            std::string operatorIdentifier,
            std::set<std::shared_ptr<KeyedStateHandle>> stateHandles,
            KeyGroupRange *keyGroupRange,
            TypeSerializer *keySerializer,
            int numberOfKeyGroups,
            int alternativeIdx) {};
};

#endif // OMNISTREAM_STATEBACKEND